Rice-htiller



MARSH & WHITNEY.

Rice Huller and Grain Scourer.

No. 9,692. Patented April 26, 1853.

WWW

idg/IV 9./

N. PETERS, Phom-umugmpher, wahingfm D. C.

NITED STATES PATENT OFFICE.

DAVID MARSH AND BENNET WHITNEY, OF FAIRFIELD, CONNECTICUT.

RICE-HULLER.

Specification of Letters Patent No. 9,692, dated April 26, 1853.

To all whom t may concern:

Be it known that we, DAVID MARSH and BEN NET lVHrr-NEY, both ofFairfield, in the county of Fairfield and State of Connecticut, haveinvented and made a new and useful Machine Vhich le Denomnate theDentated Rice-Huller and Grain-Scourer, it being designed to separateand remove the hull or shuck from rice, and smut and all otherimpurities from grain; and we do hereby declare that the following is afull, clear, and exact description of the same, reference being had tothe annexed drawings, making a part of this specification, in which iFigure l is a perspective view, with a part of the case or curb removedto show the screen and mill stones. Fig. 2 is a perpendicular sectionfront to rear through the center. Fig. 3 is a horizont-al sectionshowing the fan or blower. Fig. 4 is a horizontal section showing thedentated cylinder. Fig. 5 is a horizontal underside view of therevolving beater. Fig. 6 is a horizontal view of different parts of thescreen.

The same letters and numbers as marks of reference apply to the likeparts in all the figures.

The frame containing and supporting the machine is constructed of fourupright posts, P, fastened together at the bottom by the plates o-f thefan-box fb, and abo-ve by horizontal pieces of wood fitted together bymortise and tenor. The fan box fb, is made of two plates of iron (orother material,) No. l and No. 2, with a cylindrical rim r, open infront Q, for the passage of wind into the vent-pipe fu, p, and in whichruns the fan or blower F, the shaft of which s projects above the upperplate 2, to receive a pulley p4. The lower plate 1 has an opening o,suicient to admit the air. Above this pulley is another plate orcrosspiece 3 with a socket la, in the center to receive the lower end ofthe main spindle or shaft S. Near the lower end of the spindle is apulley p1, from which a band or belt b, extends'to the back vof themachine to carry a small upright shaft, by a pulley p2, on the lower endof which is another pulleyp3, from which another belt, bt, returns tothe fan pulley, p4, the size of which pulleys may be graduated to givethe desired speed to the fan or blower.

Above the pulley p1, is another plate 4, fastened to the posts P, at thecorners, which forms the bottom of the dentated cylinder D, C, near thefront edge of which is an opening z' through which the grain escapesafter going through the beating process. From this plate rises acylinder D, C, to any desired height, having teeth t, on the interiorsurface running in horizontal rows. Within this cylinder rises anothercylinder D, C2, from the same plate, having similar rows of teeth ont-he exterior surface, leaving a space between the extremities of theteeth on each cylinder sufficient for the beating arms ba, to revolvebetween. The beating arms are four or any other number and projectdownward (nearly to the bottom of the cylinder) from a plate or wheel w,which is fastened to and runs with, the main shaft or spindle s, at thetop of the cylinder. On both the outer and inner sides of the arms ba,are teeth t, similar to and projecting between the horizontal rows ofteeth on the cylinder. The space between the outer and inner cylinders,and also the space between each horizontal row of teeth on the cylindersmust be sutiicient to allow the beating arms with their teeth to movebetween them without breaking or crushing the grain when the i machineis filled. The plate or wheel fw, carrying the beating arms ba, hasopenings between the arms a, to admitthe entrance of the grain fromabove. The dentated cylinders may be made of cast iron rings, eachhjaving its row of teeth, and placed one on the top of another, or thewhole may be cast in one piece, and fastened with bolts to the bottomplate No. 4. The outer cylinder has a curb or flange g, to receive andconfine the grain as it falls from above. i

Directly 'above the wheel which holds the beating arms, ba, is a stoney, hung on cross arms fr, suspended by four bolts b, s, which extendabove the curb and may be raised and lowered by nuts and screws at thetop. Above this is another stone o, fastened to the spindle s andrunning with it, having an opening or eye in the center e, through whichthe grain passes as it comes from the screen.

The screen directly above the stones with the spindle passing throughit, is made in three parts the lower one, 3, having a tight bottom isdesigned to carry off the dust and fine particles which sift from thegrain as it passes through.; the second one, 2, is of wire of sufficientfineness to retain the grain, the first, l, is a coarser wire sievethrough which the grain passes while the straws and other coarsesubstances are separated from it. Number one and three discharge into aconductor ed, leading into the vent pipe o, p, of the blower. N o. 2discharges through an opening n, from the lower end running backward anddownward to the center. The spindle s may be carried by a pulley placedon it near the upper or lower end. On the spindle Where it passesthrough the screen is a projection or eccentric by which the screen isshaken, by the said projection coming in contact at each revolution ofthe spindle, with an angular projection in the eye of the screen. At thebottom of the curb over the dentated cylinder is an opening and spout mthrough which the eXcess of grain may escape when the cylinder is fullto prevent clogging the stone and screen to be returned to the hopper byan elevator.

In front of the screen stones and cylinder is a conducting passage e, d,the upper part perpendicular andthe lower part inclining about l5degrees, contracting on the sides, and uniting at the lower end with thevent pipe op. The Vent-pipe op, is made with the bottom horizontal, andplaced about on a level with the top plate 2 of the fan bosr fb, the topinclining about 45 degrees, and sides perpendicular; and open in frontfor the egress of chaff &c. Back and below the vent pipe'oy?, is thereceiving boX R, which is made of boards, the front and backperpendicular the ends inclining inward at the top, and bottomhorizontal. This boX may be fastened to the frame of the machine or useddetached if found more convenient by setting it under the spout sp, andletting it rest on the Hoor on which the machine stands. On the front ofthe receiving box R, is a slide sl, the upper edge of which may beraised or lowered in the vent pipe by the knob im (the shank of the knobbeing set in the slide.)

The operation of the machine is as follows The grain is put into thescreen No. l, which separates the coarser parts from it,

and passing throughthis into No. 2, which separates the dust and linerparticles (the impurities passing out into the conducting ecZ,) it isconveyed by opening n, through No. 3 into the eye z of the runner stone,fv. Passing out from between the stones, which are set at such adistance as to break any larger substances but not to crush the grain,)it falls through the curb g, into the dentated cylinder, D, C, where itis subjected to the beating process as long time as the operator maychoose; it being detained in the said dentated cylinder by closing theorifice 2' by drawing out the said slide y', over the said orifice z',thus keeping the orifice closed until suiiiciently beaten, when it isdischarged through the said orifice z' by drawing out the said slide y',thus permitting the grain to escape into the spout sp, which carries itthrough a current of air, from the blower F, which current of airseparates and blows out the chaff, hull, or husk from the grain as itpasses down into the receiver R. The line upon which the current of airpasses through the grain to winnow out the chaff or hull is regulated byraising or low ering the slide, sZ,-so that no grain shall be blown outor any chaff or hulls fall into the receiver. The grain may be taken outof the receiver by a. spout near the bottomor by an elevator.

Of the above described machinery and which we desire to secure byLetters Patent: we claim- The two dentated cylinders and the dentatedbeating arms, running between them; to be used in connection with theabove described machinery.

In witness whereof we have hereunto set our hands this tenth day ofMarch, one thousand eight hundred and fifty three.

DAVID MARSH. BENNET VHITNEY. In presence of- IBA NICHOLS, STEPHENHAWLEY.

